Veloflex tire built with black sidewall, a narrower section distinguishes it from the BLACK, built with a core spun cotton carcass, 300 threads per inch. Features a Kevlar puncture resistant belt under the tread. Weights in at 170 grams, yet is tough enough and durable enough to be used as an every day tire for a lighter rider, or a cyclist desiring a narrower tire. Great race tire, or a front tire for a heavier rider. No synthetic tire can match the silky smooth ride of a Veloflex tire. Tread of all natural rubber offers superior road adhesion in all weather conditions. Veloflex tires are among the most widely used in the European pro peloton. Up to 135 psi. 700 x 20 170 grams